Max9867 ultra-low power stereo audio codec, Functional diagram/typical operating circuit – Rainbow Electronics MAX9867 User Manual
Page 50
MAX9867
Ultra-Low Power Stereo Audio Codec
50
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MIX
VCM
PREG
REF
DIGITAL
FILTERING
DIGITAL AUDIO
INTERFACE
LINEAR
REG
CLOCK
GEN
I
2
C
DIGITAL
FILTERING
ADCL
MXINL
PGAML:
+20dB TO 0dB
PALEN:
0/20/30dB
MICLP/
DIGMICDATA
MICLN/
DIGMICCLK
DACL
LOUTP
LOUTN
MIX
DMONO
MIX
DIGITAL
FILTERING
ADCR
DGND
() WLP PACKAGE
1
(A2)
PGND
18
(E5)
AGND
9
(A6)
MXINR
PGAMR:
+20dB TO 0dB
PAREN:
0/20/30dB
LIGL:
+24dB TO -6dB
AVL:
+3dB TO -12dB
AVR:
+3dB TO -12dB
1
μF
0.22
μF
0.22
μF
2.2k
Ω
2.2k
Ω
1
μF
12
(C6)
1
μF
8
(B5)
2.2
μF
6
(B4)
MICBIAS
REF
REG
10
(B6)
11
(C5)
MICRP
LINL
MICRN
0.22
μF
0.22
μF
2.2k
Ω
2.2k
Ω
13
(C4)
0.47
μF 15
(D5)
LIGR:
+24dB TO -6dB
LINR
0.47
μF 16
(E6)
14
(D6)
DACG:
0/6/12/18dB
MIX
DSTS
SDOUT
27
(D1)
28
(C2)
29
(C1)
30
(B1)
BCLK
DVST:
0dB TO -60dB
DACA:
0dB TO -15dB
DACG:
0/6/12/18dB
DACA:
0dB TO -15dB
VOLL:
+6dB TO -84dB
VOLL, LVOLFIX:
+6dB TO -84dB
VOLR, LVOLFIX:
+6dB TO -84dB
DIGITAL
FILTERING
DACR
VOLR:
+6dB TO -84dB
MIX
22
(E3)
21
(D2)
ROUTP
ROUTN
MIX
JACK
DETECT
19
(D3)
JACKSNS/
AUX
17
(D4)
20
(E4)
SDIN
31
(B2)
MCLK
TO PROCESSOR
TO PROCESSOR
SYSTEM
CLOCK
2
(B3)
SCL
3
(A3)
SDA
4
(C3)
IRQ
26
(E1)
DVDDIO
1.7V–3.6V
LRCLK
1
μF
32
(A1)
DVDD
1.8V
1
μF
23
(E2)
PVDD
1.8V
1
μF
5
(A4)
AVDD
1.8V
1
μF
7
(A5)
PREG
MAX9867
Functional Diagram/Typical Operating Circuit